ArticleCurrent genomics2018
Early Stages of XY Sex Chromosomes Differentiation in the Fish
Article in Current genomics, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.
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Who cites it
19 citing papers in PubMed, 28 citations in OpenAlex.
- Repeatome Dynamics and Sex Chromosome Differentiation in the XY and XYInternational journal of molecular sciences · 2025Article
- Genome-Wide Association Studies (GWAS) and Transcriptome Analysis Reveal Male Heterogametic Sex-Determining Regions and Candidate Genes in Northern Snakeheads (International journal of molecular sciences · 2024Article
- Article
- Satellitome analysis on the pale-breasted thrush Turdus leucomelas (Passeriformes; Turdidae) uncovers the putative co-evolution of sex chromosomes and satellite DNAs.Scientific reports · 2024Article
- Chromosome Painting inFrontiers in genetics · 2022Article
- New methodology for repetitive sequences identification inBiomedical signal processing and control · 2021Article
- Tracking the Evolutionary Trends Among Small-Size Fishes of the GenusFrontiers in genetics · 2021Article
- Article
- Deciphering the Evolutionary History of Arowana Fishes (Teleostei, Osteoglossiformes, Osteoglossidae): Insight from Comparative Cytogenomics.International journal of molecular sciences · 2019Article
- Karyotypes and Sex Chromosomes in Two Australian Native Freshwater Fishes, Golden Perch (International journal of molecular sciences · 2019Article
- Deciphering the Origin and Evolution of the XInternational journal of molecular sciences · 2019Article
- Chromosomal Evolution and Evolutionary Relationships ofInternational journal of molecular sciences · 2019Article
- Emerging patterns of genome organization in Notopteridae species (Teleostei, Osteoglossiformes) as revealed by Zoo-FISH and Comparative Genomic Hybridization (CGH).Scientific reports · 2019Article
- Comparative Cytogenetics and Neo-Y Formation in Small-Sized Fish Species of the Genus Pyrrhulina (Characiformes, Lebiasinidae).Frontiers in genetics · 2019Article
- Cytogenetics, genomics and biodiversity of the South American and African Arapaimidae fish family (Teleostei, Osteoglossiformes).PloS one · 2019Article
- Sex Chromosome Evolution and Genomic Divergence in the FishFrontiers in genetics · 2018Article
- Review
- First Chromosomal Analysis in Hepsetidae (Actinopterygii, Characiformes): Insights into Relationship between African and Neotropical Fish Groups.Frontiers in genetics · 2017Article
- Contributions to the cytogenetics of the Neotropical fish fauna.Comparative cytogenetics · 2017Article
Corrections and comments
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Authors and funding
8 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundSpecies with 'young' or nascent sex chromosomes provide unique opportunities to understand early evolutionary mechanisms (e.g. accumulation of repetitive sequences, cessation of recombination and gene loss) that drive the evolution of sex chromosomes. Among vertebrates, fishes exhibit highly diverse and a wide spectrum of sex-determining mechanisms and sex chromosomes, ranging from cryptic to highly differentiated ones, as well as, from simple to multiple sex chromosome systems. Such variability in sex chromosome morphology and composition not only exists within closely related taxa, but often within races/populations of the same species. Inside this context, the wolf fish Hoplias malabaricus offers opportunity to investigate the evolution of morphologically variable sex chromosomes within a species complex, as homomorphic to highly differentiated sex chromosome systems occur among its different karyomorphs. MATERIALS &
methodsTo discover various evolutionary stages of sex chromosomes and to compare their sequence composition among the wolf fish´s karyomorphs, we applied multipronged molecular cytogenetic approaches, including C-banding, repetitive DNAs mapping, Comparative Genomic Hybridization (CGH) and Whole Chromosomal Painting (WCP). Our study was able to characterize a cryptically differentiated XX/XY sex chromosome system in the karyomorph F of this species.
conclusionThe Y chromosome was clearly identified by an interstitial heterochromatic block on the short arms, primarily composed of microsatellite motifs and retrotransposons. Additionally, CGH also identified a male specific chromosome region in the same chromosomal location, implying that the accumulation of these repeats may have initiated the Y chromosome differentiation, as well as played a critical role towards the evolution and differentiation of sex chromosomes in various karyomorphs of this species.
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